Fluorosulfonic acid is an inorganic sulfur-containing acid, the formula is HSO 3 F. Can be considered as sulfuric acid monofluorohydride.
| Fluorosulfonic acid | |
|---|---|
| General | |
| Systematic name | fluorosulfonic acid |
| Traditional names | fluorosulfuric acid |
| Chem. formula | FHO₃S |
| Rat formula | HSO 3 F |
| Physical properties | |
| condition | Colorless liquid |
| Molar mass | 100.07 g / mol |
| Density | 1,740 g / cm³ |
| Thermal properties | |
| T. melt. | -87 ° C |
| T. bale. | 163 ° C |
| Classification | |
| Reg. CAS number | |
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| Smiles | |
| Inchi | |
| RTECS | |
| UN number | |
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| Security | |
| H phrases | H201 , H202 , H235 + H410 |
| P-phrases | P201 |
| GHS icons |   |
| NFPA 704 |  0 3 2 |
Properties
Slowly hydrolyzes with water. Anhydrous does not affect glass . Vigorously reacts with organic substances . Dissolves many metal fluorides (e.g. silver (I) fluoride ).
Very strong acid. Refers to superacids . The acidity function of pure acid is −15.07. The addition of 7% antimony pentafluoride to fluorosulfonic acid lowers the acidity function H 0 (i.e., increases acidity) to −19.4.
Sources of Information
- "Chemical Encyclopedia" vol. 2 M .: Soviet Encyclopedia, 1990 p. 396
- Chemical Encyclopedic Dictionary, ed. Knunyants I. L., Moscow: Soviet Encyclopedia, 1983 p. 517
- Nekrasov B. V. "Fundamentals of General Chemistry" vol. 1 M.: Chemistry, 1973 p. 335